disallow RegExp lookbehind assertions (es/no-regexp-lookbehind-assertions)
This rule reports ES2018 RegExp lookbehind assertions as errors.
Examples
⛔ Examples of incorrect code for this rule:
/*eslint es/no-regexp-lookbehind-assertions: error */
const r1 = /(?<=a)b/
const r2 = /(?<!a)b/